KR200411502Y1 - Air insulated outgoing Automatic Load Transfer Switch - Google Patents

Abstract

The present invention discloses a pull-out type automatic load switching switch. The disclosed subject matter, the base constituting the body; A bushing for connecting an incoming power cable connected from a pair of different power sources to the base via a connecting material; A fire extinguishing unit installed in the base to open and close a high voltage current supplied through the bushing; And an air bushing configured to externally draw a high voltage current opened and closed through the arcing unit.

According to the present invention, it is possible to reduce the work time and cost by allowing the external drawing to be directly drawn out to the bus bar through the air bushing so as to omit the process due to the connection material work of the external drawing part, it is possible to reduce the work time and cost, By using the bar to supply power to the load side in the air, the width of the switchboard for installing the automatic load switching switch is greatly reduced, thereby increasing the space efficiency.

Description

Air insulated outgoing Automatic Load Transfer Switch

1 is a configuration diagram of a conventional automatic load switching switch;

  1A is a front view thereof, and FIG. 1B is a side view thereof.

2 is an installation road in a switchboard of the automatic load switching switch illustrated in FIG. 1;

  2A is a side view thereof, and FIG. 2B is a front view thereof.

3 is a schematic view of a line configuration of the automatic load switching switch illustrated in FIG. 2.

4 is a configuration diagram of a lift-out type automatic load switching switch according to an embodiment of the present invention,

  4A is a front view thereof, and FIG. 4B is a side view thereof.

FIG. 5 is an installation diagram in a switchboard of the lift-out type automatic load switching switch illustrated in FIG. 4;

  5A is a side view thereof, and FIG. 5B is a front view thereof.

6 is a configuration diagram of an air bushing used in the air-loading automatic load switching switch illustrated in FIG. 4;

  6A is a side view and a front view thereof, FIG. 6B is a sectional view thereof, and FIG. 6C is a rear perspective view thereof.

FIG. 7 is a conceptual diagram illustrating an energization path of the lift-out type automatic load switching switch illustrated in FIG. 4.

<Description of the symbols for the main parts of the drawings>

110: base 120: tank

130: ext. 140: incoming power cable

150: connecting member 160: air bushing (Airbushing)

161: conductor bar 162: epoxy water

163: Screen 164: O-Ring Home

170: Busbar

The present invention relates to an automatic load switching switch, and more specifically, to ensure a dual power to the customer who suffers a great damage in the event of a power failure in the 22.9kV line to automatically switch to a reserve power in the case of a main power failure can receive a stable power supply. It relates to an air take-out method of an automatic load switchgear, which is a device to make it.

In general, an automatic load transfer switch (ALTS) provides a dual power source to a customer who is heavily damaged during a power outage such as a national public institution, a hospital, an intelligent building, a computer center, or a military facility. When the main power falls below the reference voltage, it is the name of the device that automatically switches to the reserve power so that the customer can be supplied with stable power, and it is important to ensure uninterruption of the installation site due to the nature of the place where this device is installed. The stability of is also important.

The automatic load switching switch, which is a kind of special high voltage switchgear, is connected to two power lines and one load line to supply power, and one of the two power sources is used as the main power source. The power is supplied to the load by the power source, and when the main power is returned again, it is automatically operated to supply power to the load through the main power source.

An elbow connector is usually used for the cable connection of such an automatic load switching switch.

1 is a configuration diagram of a conventional automatic load switching switch, FIG. 1A is a front view thereof, and FIG. 1B is a side view thereof. 2 is an installation diagram in a switchboard of the automatic load switching switch illustrated in FIG. 1, FIG. 2A is a side view thereof, and FIG. 2B is a front view thereof. 3 is a line configuration diagram of the automatic load switching switch illustrated in FIG. 2.

1 to 3, the first side power source and the second side power source are supplied with power from different substations through the high voltage power cable 10, and each of the bushings 20 has such a power cable. In order to connect 10, the connection member 30 is used to maintain insulation at a high pressure of 22.9 kV.

On the other hand, although the load-side power supply must also be connected to the air insulated busbar (not shown) of the side panel, it is necessary to use a high-voltage cable, so that the bushing 20 and the power cable 10 by using the connection member 30. ) Will be connected.

However, in such a conventional automatic load switching switch, since the first and second side power sources, which are the incoming power, are supplied with power through the underground line, it is reasonable to connect the inlet by using a connection member, but the load side power source, which is the drawer, is used. In this case, despite the connection with the live part of the switchboard, the use of the connection material has a problem that the cost of the expensive connection material and the work of the cable terminal enters a lot, so that the work cost is excessive.

Therefore, the present invention has been devised to solve the above problems of the prior art, an object of the present invention is to provide an air bushing to enable the insulation of the line drawn to the load side, the load side lead-out portion from the front to the top It is possible to provide a pull-out type automatic load switching switch that can be connected by using a copper busbar without using high voltage cables and connecting materials, thereby reducing work time and cost and improving space efficiency. .

Lifting-out type automatic load switching switch according to the present invention for achieving the above object, the base constituting the main body; A bushing for connecting an incoming power cable connected from a pair of different power sources to the base via a connecting material; A fire extinguishing unit installed in the base to open and close a high voltage current supplied through the bushing; And an air bushing configured to externally draw a high voltage current opened and closed through the arcing unit.

At this time, the air bushing, the conductor bar; An epoxy material wrapped around the conductor bar and insulated; And a screen inserted into the epoxy material to ground the charging current.

The exposed portion of the epoxy in the air is preferably wrinkled.

The air bushing is preferably in direct contact with the busbar (copbar) of the outer material is drawn out.

Hereinafter, a preferred embodiment of the present invention with reference to the drawings in detail.

4 is a configuration diagram of a lift-out type automatic load switching switch according to an embodiment of the present invention, Figure 4a is a front view thereof, Figure 4b is a side view thereof. In addition, Figure 5 is an installation diagram in the switchboard of the pull-out type automatic load switching switch shown in Figure 4, Figure 5a is a side view, Figure 5b is a front view thereof.

4 and 5 together, the lift-out type automatic load switching switch according to an embodiment of the present invention, the base 110 constituting the box-shaped body, SF6 gas is filled in the base 110 The tank 120 is installed, and the tank 120 is installed inside the tank 120 to implement a function of opening and closing the high-voltage current on-off (On-Off).

At the bottom of the base 110, a plurality of bundles of incoming power cables 140, which are supplied with electricity from different substations, that is, a pair of different power sources, are formed in the base 110 through the plurality of connection members 150. The bushing 121 is connected through.

An air bushing 160 is connected to an upper end of the base 110 to draw out a current of a high voltage, which is opened and closed through the arcing unit 130, in the air.

In this case, as shown in FIG. 5B, the air bushing 160 is connected to a bus bar 170 (busbar) made of copper and connected to another panel (not shown) by air.

The installation of the bushing 121 in the upper portion and the connection with the bus bar 170 is possible because of the structure of the air bushing 160 to be described later.

6 is a configuration diagram of an air bushing used in the air-loading automatic load switching switch illustrated in FIG. 4, FIG. 6A is a side view and a front view thereof, FIG. 6B is a sectional view thereof, and FIG. 6C is a rear perspective view thereof.

The air bushing 160 may include a conductor bar 161, an epoxy material 162 wrapped around the conductor bar 161 and insulated from each other, and a charge current inserted into the epoxy bar 162. Grounding screen 163.

At this time, the portion exposed to the air of the epoxy material 162 is preferably treated with a pleat (162a) to secure the surface insulation distance, the portion entering the tank 120 to prevent gas gas leakage O-ring groove 164 is preferably formed so that the O-ring (not shown) can be fitted.

FIG. 7 is a conceptual diagram illustrating an energization path of the air-draw type automatic load switching switch illustrated in FIG. 4. As illustrated in FIG. 7, electricity is input through an incoming power cable 140 to be bushed through a connecting member 150. Is supplied to the air pull-out type automatic load switching switch of the present invention through the 121, the extinguishing unit 130 inside the tank 120 is selected and opened and closed, the current of the high pressure is opened and closed the air bushing 160 It is drawn out by the bus bar 170 in contact with it.

On the other hand, the present invention has been described with reference to the embodiment shown in the drawings, but this is only an example, those skilled in the art will understand that various modifications and equivalent embodiments are possible from this. The true technical protection scope of the present invention should be defined by the appended claims.

As described above, according to the air draw-out type automatic load switching switch according to the present invention, by allowing the external draw out directly to the busbar through the air bushing, by eliminating the process due to the connection material work of the external drawer, work time and This can reduce costs.

In addition, according to the present invention, by using the copper bus bar to power the power supply to the load side in the air, the width of the switchboard for installing the automatic load switching switch can be significantly reduced to increase the space efficiency.

Claims (4)

In the lift-out type automatic load switching switch, A base forming a body; A bushing for connecting an incoming power cable connected from a pair of different power sources to the base via a connecting material; A fire extinguishing unit installed in the base to open and close a high voltage current supplied through the bushing; And And an air bushing for drawing out the high voltage current opened and closed through the arcing unit to the air. The method of claim 1, The air bushing, Conductor bar; An epoxy material wrapped and wrapped around the conductor bar; And And a screen inserted into the epoxy material to ground the charging current. The method of claim 2, Lifting-out type automatic load switching switch, characterized in that the air exposure portion of the epoxy material is wrinkled. The method according to any one of claims 1 to 3, The air bushing type automatic load switching switch, characterized in that the air bushing is drawn out in direct contact with the busbar (cop) material.

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